Click to expand Tap to zoom H K Porter (9158) Plunger - Valve Body by H K Porter 9190 Pneumatic Cutter & Parts Sale $79.33 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Part goes inside the valve assembly and it seals agaisnt part 9154 to send air to the cylinder when the trigger is pulled H K Porter-9190 Parts Diagram.pdf